Electric furnace.



, A. HELFENSTEIN.

ELECTRIC FURNACE.

APPLTCATYON FILED APR.1C.1913 l ,O82,1 96, Patented Dec. 23, 1913.

' a I: IE1

UNITED sTATEs PATENT OFFICE.

ALQIS HsLrn'n'srnm, or man, lineman-Rumour.

ELECTRIC FURNACE.

To all whom it may concern:

Be it known that I, Anois HELFENSTEIIQT,

a citizen of the Swiss Republic, residing at 50 Bastiengasse XVIII,Vienna, Austria- Hungary, have invented a new and-use ful Improvement inElectric Furnaces, of which the following is a specification.

My invention relates principallyto improvements in that classof closedelectric furnaces with upper electrodes in which charging chutes aredisposed above joint hearths so the charging inaterial forms theshortest electric connection between the electrodes.

The invention consists of the arrangement of the chutes between theupper airs of thevertical electrodes whereby rom these chutes thecharging for and through the chutes-the removal of the gases from thetwo adjacent electrode chambers is reflected.

The intermediate spaces formed by the charging-chutes, and through whichthe electrodes pass, are utilized, for charging purposes; the openingsfor the electrodes being tight, and the electric meltingregicn in theeffective zone of the electrodes isreadily and quickly accessible,without interfering with the'continuity of charging.

the material or of removal of the gases. In order to serve both classesof chutes from the same plattorm, special feed-tubes or 1 troughs arearranged suitably in these intermediate spaces between the chargingchutes.

i In the annexed drawing, in which the object of the. invention is shownconventionally, Figure 1 is a three-phase furnace with "three verticalelectrodes, partly in elevation, partly in lengthwise section. Fig. 2 isa plan of the device; and Fig. 3 is a cross section thereof. v

A. is the electric furnace, B B5,, B -IB, charging chutes arranged abovealong the entire width of the furnace, which form the hoppers C C U forthe insertion of the electrodes.

E E E are the Vertically-hanging elec trodes.

,Churging the furnace effected in theusual manner through the hoppersD,,'D,,,D D Chargingof the hoppers C C C is effected through separatepipes G G G G G G The electrode'hoppers C C C taper downward; andfor theinsertion and F21 F3: F0

.he chargin -chutes have lateral man Specification of Letters Patent.vPatented Dec, 23, 1913, Application filed April 18,. 1913. Serial No.761,686.

regulation of the electrodes have only a.

small slot, which permits the passage of but little material. Thus theopenin for the insertion of the electrode will be ept gastight, andthefgases compelled to pass off through the charging-chutes. Thesegases.

can be led off in the usual manner through the regular ofi-take, orexhausted laterally from thechargingchutes by the pipes F holes M,, M, trough which the charging can be observed as it takes place, and whennecessary the operations in t lated (Fig. 3).

. Where the gases e furnace reguhaust-pipes -F,, F, terminate inthecollecting-p'pes S 5,,- which lead off -the-gases for further use,

What is claimed is; 1., In a device ofthe kind described, a

ai efeshausted laterallyfro'rn the charging chutes (Fig. 2) theexhearth, a series of charging chutes arranged above said hearth, aseries of electrodes 'sus'-' pended above said hearth and alternatingwith said chutes, and means to charge mate-' rial'into the spacesbetween said chutes and electrodes.

2. In a device of the kind described, a hearth, a series of chargingchutes arranged chutes carried by the first mentioned chutes andarranged to charge the spaces between said electrodes and firstmentioned chutes.

In testimom whereof Iafli'ig mysignature in presence 0 two witnesses, I

ALOIS HELFENSTEIN. Witnesses:

Anous'r Fuosnn, IGNAZ KNonrALMAoHEn.

